Pot for melting glass



sq s, 1925. 1,552,891

H. SCHNURPEEIL I POT FOR MELT ING GLASS Filed April 9, 1925 lnuelzioli1f. Sdzzuqfle (Ll,

Patented Sept. 8, 1925.

HANS SGHNURPFEIL, F CAR LSBAD, CZECHOSLOVAKIA.

r01 r03 mnmnve GLASS.

Application filed April 8, 1925. Serial No. 21,658.

To all whom it may concern Be it that I, HANS S HNURPFEIL, a citizen ofthe Czechoslovakian Republic, and residing at Sprudelstrasse 40',Carlsbad, Czecho- 5 slovakia-,-have invented certain new and usefulImprovements in Pots for Melting Glass, of whichth following is aspecification.

Ascrucibles or pots for the melting of glass vessels of a cylindrical orfrusto-conical form have hitherto been employed, which stand with a fiatbottom on the funnace bench (see Figure 1 of the drawing). This howevergives rise to a disadvantage, in the melting process, that asubstantially smaller heating effect is produced on the raw material ofthe glass located at the bottom of the crucible than onthe raw glassmaterial located in the upper part of the pot directly exposed to thetemperature prevailing in the upper space of the furnace. The

time occupied .in melting is therefore excessively long and theconsumption of fuel ver great, in addition towhich the life of succrucibles is comparatively short.

The object of this invention is to obviate these disadvantages; and theinvention consists essentially in'providing the bottom of the cruciblewith one or more hollow ribs projectinginto the interior thereof andopenmg on the outside of the pot, so that the flames and combustiongases have unimpeded access to the interior of the ribs. Owing to thisarrangement the bottom acquires a stepped form, which is advantageousboth for a looser supporting of the raw material-of the glass and for abetter and more compact burning of the pot for the purpose of prolongingits life. More articularly, however,

by this arrangement t e result is obtained traversed by flames andcombustion gases.

that the flames and combustion gases also 4 exert a melting action onthe raw glass material surrounding the ribs, so that'the melt ingprocess is shortened, assuming that the other working conditions remainthe same and consequently the expenditure-- of fuel is 4 reduced.

In the accompanying drawings, Figure 1 shows, for purposes of comparisona flatbottomed pot of the usual type, While'the remaining figures Iillustrate one constructional form of a pot or crucible according to theinvention.

Figure 2 shows a sectional elevation thereof, and

Figures 3 and 4 are sections on the line a2a: and g y respectively ofFigure 2.

The bottom 1 of the pot 2 standing on the furnace bench is provided witha double walled rib 3 projecting into the interior of the furnace. The sace 4 between the op- 00 posite walls of the ri is open to the exteriorof the crucible, so that the flame gases can pass through it withouthindrance and melt the raw material lying at the bottom.

What I claim is:--

1. A: pot for melting glass, the bottom of said p'ot comprising a hollowrib projecting into the interior of the pot and opening to the exteriorso that it can be freely traversed by flames and combustion gases. 2. Apot for melting glass, the bottom of said pot comprising hollow ribsprojecting into the interior of said pot and o ening to the exterior sothat they can freely 7 In testimony whereof I have signed my name tothis specification.

HANS SGHNURPFEIH

